Harley-Davidson Repair & Maintenance – Orange, CA

Independent Harley Service in Orange County

If you prefer to have your Harley serviced by an experienced, independent shop instead of a dealership, check out Motorcycle Tire Center in Orange, California.

We offer Harley-Davidson crash repair, complete harley engine rebuilds, transmission rebuilds, bars, electrical, custom paint and fabrication, performance upgrades, and Harley tire changes, all under one roof.

Whether you ride a Dyna, FXR, T-Sport, Softail, Bagger, or even an old-school Ironhead, we’ve got you covered.

Harley-Davidson Services We Offer:

• General Harley diagnostics & maintenance

• Complete oil service (engine, transmission, primary)

• Clutch, throttle, and brake control adjustments

• Brake system repairs & fluid flush

• Exhaust repair & modifications

• Custom handlebar installs (T-bars, risers, ape hangers)

• Performance tuning & dyno-style prep

• Engine rebuilds (top/bottom end, cam upgrades)

• Transmission rebuild 

• Insurance claims / crash repair

• Harley tire replacement (most sizes in stock – while-you-wait)

Custom Work & Experience You Can Trust

We’ve worked on hundreds of Harleys and completed some incredible customizations.
Whether you’re fixing a crash, upgrading your ride, or just need regular service, we’ll walk you through options that meet your budget and riding style.

📍 Located in Orange, CA – riders from Anaheim, Fullerton, Santa Ana, and all over Orange County choose us for fast, trusted Harley service.

How to Check Diagnostic Trouble Codes (DTCs)

You don’t need a scan tool — here’s how to retrieve codes from your Harley using the odometer window.

1. Enter Diagnostic Mode:

• Turn your ignition switch OFF

• Hold down the trip reset button

• While holding the button, turn the ignition switch to ON

• Release the button when "DIAG" appears on the display
  
  

2. Navigate Modules: Use the trip switch to cycle through:

• ECM = Engine Control Module

• BCM = Body Control Module

• SPDO = Speedometer

• ABS = Anti-Lock Braking System

• Radio, TPMS, etc. (if equipped)
  
  

3. Read the Codes:

• If it says “NONE” → No code stored

• If a code appears, hold the trip button to display the full code and number

• Write them down — bring them to us if you’re unsure!
  
  

Common Harley-Davidson DTC Code Categories

P Codes (Powertrain)

• P0106 – MAP Sensor Range/Performance

• P0118 – Engine Coolant Temp High Input

• P0261 – Front Injector Low/Open

• P1353 – Front Cylinder No Combustion

• P1608 – Loss of Continuous Power

• P2101 – Throttle Actuator Range Error
  
  

B Codes (Body Control)

• B1004 – Fuel Level Sending Unit Low

• B1121 – Left Turn Output Fault

• B2122 – Right Rear Turn Output Open

• B2271 – Alarm Output Short to Ground
  
  

C Codes (Chassis / ABS)

• C0652 – Low Voltage to ABS Module

• C1014 – Front Wheel Speed Sensor Signal Error

• C1234 – Rear Wheel Speed Implausible
  
  

U Codes (Communication / CAN Bus)

• U0001 – CAN Bus Communication Error

• U0140 – Lost Comm with Body Control Module

• U0100 – Lost Comm with ECM

• U0300 – Software Incompatibility

Code Meaning

ECM - Engine Control Module

BCM - Body Control Module

SPDO - Speedometer

ABS - Anti-lock Braking System

TSM - Turn Signal Module

TSSM - Turn Signal Security Module

HFSM - Hands-Free Security Module

P&A - Parts and Accessories

DTC - Diagnostic Trouble Code

TPS - Throttle Position Sensor

MAP - Manifold Absolute Pressure

IAT - Intake Air Temp

VSS - Vehicle Speed Sensor

CKP - Crankshaft Position Sensor

ECT - Engine Coolant Temp

What Should You Do With a Code?

These codes don’t always mean something is failing — sometimes they’re just from a low battery, sensor hiccup, or recent service. But if the light is on consistently or the bike runs poorly, schedule service at our shop in Orange, CA.

We’ll run full diagnostics, clear codes, and make sure you’re road-ready.

Harley-Davidson Sensor & Motor Fault Codes

P0051 – Heater Control Circuit 02 Sensor Low  

P0106 – MAP Sensor Range or Rate Error  

P0107 – MAP Sensor Failed Open/Low  

P0108 – MAP Sensor Failed High  

P0112 – IAT Sensor Voltage Low  

P0113 – IAT Sensor Voltage Open / High  

P0117 – ET Sensor Voltage Low  

P0118 – ET Sensor Voltage Open / High  

P0120 – TPS1 Range Error  

P0122 – TPS1 Low  

P0123 – TPS1 High / Open  

P0131 – Front 02 Sensor Low (lean)  

P0132 – Front 02 Sensor High (rich)  

P0134 – Front 02 Sensor Open / Not Responding  

P0151 – Rear 02 Sensor Low (lean)  

P0152 – Rear 02 Sensor High (rich)  

P0154 – Rear 02 Sensor Open / Not Responding  

P0220 – TPS2 Range Error  

P0222 – TPS2 Low  

P0223 – TPS2 High / Open  

P0261 – Front Injector Open / Low  

P0262 – Front Injector High  

P0263 – Rear Injector Open / Low  

P0264 – Rear Injector High (CAN-Bus)  

P0371 – Crank Position Sensor – Too Many Pulses  

P0372 – Crank Position Sensor – Too Few Pulses  

P0373 – CKP Sensor Intermittent  

P0374 – CKP Sensor Not Detected  

P0444 – Purge Solenoid (Evap Canister) Open / Low  

P0445 – Purge Solenoid (Evap Canister) High  

P0501 – VSS Low  

P0502 – VSS High / Open (CAN-Bus)  

P0503 – VSS Speed Failed High  

P0505 – Loss of Idle Speed Control  

P0506 – Idle Speed Control RPM Too Low  

P0507 – Idle Speed Control RPM Too High  

P0562 – Battery Voltage Low  

P0563 – Battery Voltage High  

P0572 – Brake Switch Low  

P0577 – Cruise Control Input High  

P0602 – Calibration Memory Error  

P0603 – ECM EEPROM Failure  

P0604 – RAM Failure  

P0605 – ECM Flash Error  

P0607 – Converter Error  

P0641 – 5V Reference 1 Out of Range  

P0651 – 5V Reference 2 Out of Range  

P0661 – Intake Solenoid Low / Open  

P0662 – Intake Solenoid High / Shorted  

P1001 – System Relay Coil Open / Low  

P1002 – System Relay Coil High / Shorted  

P1003 – System Relay Contacts Open  

P1004 – System Relay Contacts Closed  

P1009 – Incorrect Password  

P1010 – Missing Password  

P1270 – TGS Validation Error  

P1351 – Front Ignition Coil Open / Low  

P1352 – Front Ignition Coil High / Shorted  

P1353 – Front Cylinder No Combustion  

P1354 – Rear Ignition Coil Open / Low  

P1355 – Rear Ignition Coil High / Shorted  

P1356 – Rear Cylinder No Combustion  

P1357 – Front Intermittent Secondary Combustion  

P1358 – Rear Intermittent Secondary Combustion  

P1475 – Exhaust Actuator Position Error  

P1477 – Exhaust Actuator Open / Low  

P1478 – Exhaust Actuator Shorted / High  

P1501 – Jiffy Stand Sensor Low  

P1502 – Jiffy Stand Sensor High  

P1510 – EFI Limited Performance Mode (TBW)  

P1511 – EFI Power Management Mode  

P1512 – EFI Forced Idle Mode  

P1514 – Air Flow Fault (TBW)  

P1600 – EFI Module Processor Internal Error  

P1632 – Odometer Learned Up  

P2100 – EFI TCA Motor Circuit Open (TBW)  

P2101 – EFI TCA Motor Circuit Range / Performance  

P2102 – EFI TCA Motor Circuit Low  

P2103 – EFI TCA Motor Circuit High  

P2105 – EFI Forced Engine Shutdown  

P2107 – EFI Module Control Processor Internal Fault  

P2119 – EFI Motor Throttle Body Range / Performance (TBW)  

P2122 – TGS1 Low / Open  

P2123 – TGS1 High  

P2127 – TGS2 Low / Open  

P2128 – TGS2 High  

P2135 – TPS Voltage Correlation Error  

P2138 – TGS Voltage Correlation Error  

P2176 – EFI Closed Position Not Learned  

P2300 – Front Ignition Coil Driver Low / Open  

P2301 – Front Ignition Coil Driver High / Shorted  

P2303 – Rear Ignition Coil Driver Low / Open  

P2304 – Rear Ignition Coil Driver High / Shorted  

Harley-Davidson TPMS (Tire Pressure Monitoring System) Codes

C0077 – Low Tire Pressure Detected  

C0078 – Tire Pressure Too Low or Too High / Incorrect Tire Diameter  

C0083 – Tire Pressure Monitor Malfunction Indicator (Subfault)  

C2000 – Front Tire Pressure Sensor Malfunction  

C2001 – Rear Tire Pressure Sensor Malfunction  

Harley-Davidson ABS & Power Circuit Fault Codes

C0562 – Device Voltage Low  

C0563 – Device Voltage High  

C1014 – ECU Internal Fault (ABS)  

C1017 – Pump Motor Power Circuit Fault  

C1018 – Pump Motor Ground High Resistance Fault  

C1021 – Front Wheel Speed Sensor Equals Zero  

C1023 – Rear Wheel Speed Sensor Equals Zero  

C1025 – Front Wheel Speed Signal Intermittent  

C1027 – Front Wheel Speed Frequency Out of Range  

C1032 – Front Wheel Speed Sensor Open or Shorted  

C1034 – Rear Wheel Speed Sensor Open or Shorted  

C1041 – Rear Actuator Circuit Low / Open  

C1042 – Front Actuator Circuit Open  

C1043 – Pump Motor Stalled  

C1044 – Rear Actuator Circuit Open  

C1052 – Rear Actuator Circuit High  

C1055 – ABS ECU Internal Fault  

C1066 – ECU Internal Fault  

C1094 – Front Brake Switch Always On  

C1095 – Front Brake Switch Open  

C1102 – Rear Actuator Motor Stalled  

C1118 – ECU Internal Fault  

C1121 – ECU Internal Fault  

C1151 – Front Wheel Release Too Long  

C1153 – Rear Wheel Release Too Long  

C1158 – Calibration Programming Required  

C1178 – No VIN Received From ECM  

C1184 – VIN Does Not Match ABS ECU Calibration  

C1192 – Front Actuator Circuit High  

C1193 – Front Actuator Motor Stalled  

C1206 – Front Wheel Speed Sensor Frequency Out of Range  

C1207 – Rear Wheel Speed Signal Intermittent  

C1208 – Rear Wheel Speed Sensor Frequency Out of Range  

C1212 – Front or Rear Brake Not Applied With Decel  

C1214 – Rear Brake Switch Always On  

C1216 – Rear Brake Switch Open  

C1222 – ABS Voltage Low at Terminal 11  

C1223 – ABS Voltage Low at Terminal 20  

C1224 – Front Actuator Power Shorted High  

C1225 – Rear Actuator Power Shorted High  

C1561 – Front Apply Solenoid Circuit Open or High  

C1562 – Front Apply Solenoid Circuit Shorted Low  

C1563 – Front Solenoid Circuit Shorted High  

C1564 – Front Release Solenoid Circuit Open or High  

C1565 – Front Release Solenoid Circuit Shorted Low  

C1567 – Rear Apply Solenoid Circuit Open or High  

C1568 – Rear Apply Solenoid Circuit Shorted Low  

C1571 – Rear Solenoid Circuit Shorted High  

C1572 – Rear Release Solenoid Circuit Open or High Resistance  

C1573 – Rear Release Solenoid Circuit Shorted Low  

Harley-Davidson Battery, Ignition & Lighting Fault Codes

B0563 – Battery Voltage High (TSM / TSSM)  

B1004 – Fuel Level Sending Unit Low (Instruments)  

B1005 – Fuel Level Sending Unit High / Open  

B1006 – Accessory Line Overvoltage  

B1007 – Ignition Line Overvoltage (Instruments)  

B1008 – Reset Switch Closed (Instruments)  

B1101 – LHCM Turn Signal Bulb Out  

B1103 – LHCM Internal Fault  

B1121 – Left Turn Output Fault (TSM / TSSM)  

B1122 – Right Turn Output Fault (TSM / TSSM)  

B1123 – Left Turn Output Short to Ground (TSM / TSSM)  

B1124 – Right Turn Output Short to Ground (TSM / TSSM)  

B1125 – Left Turn Output Short to Battery (TSM / TSSM)  

B1126 – Right Turn Output Short to Battery (TSM / TSSM)  

B1131 – Alarm Output Low (TSSM)  

B1132 – Alarm Output High (TSSM)  

B1134 – Starter Output High (TSM / TSSM)  

B1135 – Accelerometer Fault (TSM / TSSM)  

B1136 – Accelerometer Tip Test Error (TSSM)  

B1141 – Ignition Switch Open / Low (TSSM)  

B1142 – Smart Security System Internal Fault (TSSM)  

B1143 – Security Antenna Short to Ground (TSSM)  

B1144 – Security Antenna Short to Battery (TSSM)  

B1145 – Security Antenna Open (TSSM)  

B1151 – Sidecar BAS Low (TSM / TSSM)  

B1151 – RHCM Turn Signal Bulb Out  

B1152 – Sidecar BAS High (TSM / TSSM)  

B1153 – Sidecar BAS Out of Range (TSM / TSSM)  

B1153 – RHCM Internal Fault  

B1154 – Clutch Switch Input Short to Ground  

B1155 – Neutral Switch Input Short to Battery  

B1200 – Instrument Internal Fault  

B1210 – Fuel Sender Shorted Low / Fuel Gauge Circuit  

B1211 – Fuel Sender Shorted High / Open  

B2102 – System Power Output Shorted High  

B2103 – System Power Output Shorted Low  

B2104 – System Power Output Overloaded  

B2107 – Front Position / Running Power Output Shorted High  

B2108 – Front Position / Running Power Output Shorted Low  

B2109 – Front Position / Running Power Output Overloaded  

B2112 – Accessory Output Shorted High  

B2113 – Accessory Output Shorted Low  

B2114 – Accessory Output Overloaded  

B2116 – Fuel Pump Output Open  

B2117 – Fuel Pump Output Shorted High  

B2118 – Fuel Pump Output Shorted Low  

B2119 – Fuel Pump Output Overloaded  

B2121 – Starter Output Open / BCM Malfunction  

B2122 – Starter Output Shorted High  

B2123 – Starter Output Shorted Low  

B2124 – Starter Output Overloaded  

B2126 – Horn Output Open  

B2127 – Horn Output Shorted High  

B2128 – Horn Output Shorted Low  

B2129 – Horn Output Overloaded  

B2131 – High Beam Output Open  

B2132 – High Beam Output Shorted High  

B2133 – High Beam Output Shorted Low  

B2134 – High Beam Output Overloaded  

B2136 – Low Beam Output Open  

B2137 – Low Beam Output Shorted High  

B2138 – Low Beam Output Shorted Low  

B2139 – Low Beam Output Overloaded  

B2141 – Left Front Turn Signal Output Open  

B2143 – Left Front Turn Signal Output Shorted Low  

B2144 – Left Front Turn Signal Output Overloaded  

B2146 – Right Front Turn Signal Output Open  

B2148 – Right Front Turn Signal Output Shorted Low  

B2149 – Right Front Turn Signal Output Overloaded  

B2151 – Left Rear Turn Signal Output Open  

B2153 – Left Rear Turn Signal Output Shorted Low  

B2154 – Left Rear Turn Signal Output Overloaded  

B2156 – Right Rear Turn Signal Output Open  

B2158 – Right Rear Turn Signal Output Shorted Low  

B2159 – Right Rear Turn Signal Output Overloaded  

B2161 – Brake Lamp Output Open  

B2163 – Brake Lamp Output Shorted Low  

B2164 – Brake Lamp Output Overloaded  

B2166 – Running Lights Output Open  

B2168 – Running Lights Output Shorted High  

B2169 – Running Lights Output Shorted Low  

B2172 – Security Siren Output Shorted High  

B2173 – Security Siren Output Shorted Low  

B2176 – Security Antenna Output Open  

B2177 – Security Antenna Output Shorted High  

B2178 – Security Antenna Output Shorted Low  

B2203 – Ignition Switch Input Shorted Low  

B2206 – Engine Stop Switch Input Open / Shorted High  

B2208 – Engine Stop Switch Input Shorted Low  

B2218 – Neutral Switch Shorted Low  

B2223 – Rear Brake Switch Shorted Low  

B2250 – Clutch Switch Stuck  

B2251 – Horn Switch Stuck  

B2252 – High Beam Switch Stuck  

B2253 – Low Beam Switch Stuck  

B2254 – Left Turn Switch Stuck  

B2255 – Trip Switch Stuck  

B2260 – Start Switch Stuck  

B2261 – Right Turn Switch Stuck  

B2262 – Front Brake Switch Stuck  

B2263 – Hazard Switch Stuck  

B2270 – BCM Internal Fault  

B2271 – BCM Low Voltage  

B2272 – BCM or Speedometer Voltage High  

B2274 – Constant Battery Line Fault  

Harley-Davidson CAN Bus Fault Codes

U0001 – CAN Bus Fault  

U0011 – CAN Bus Low Shorted / CAN Bus High  

U0100 – Lost Communication with ECM  

U0121 – Lost Communication with ABS  

U0140 – Lost Communication with BCM  

U0141 – Lost Communication with LHCM  

U0142 – Lost Communication with RHCM  

U0156 – Lost Communication with Speedometer  

U1016 – Loss of ICM / ECM Serial Data  

U1040 – Loss of Communication with ABS  

U1064 – Loss of TSM / TSSM Serial Data  

U1097 – Loss of Speedometer Serial Data  

U1255 – Missing Message at Speedometer EFI  

U1300 – Serial Data Low  

U1301 – Serial Data Open / High  

U1302 – Infotainment Bus Off  

U1306 – Infotainment Bus Lost Communication with Hands-Free Phone  

U1307 – Infotainment Bus Lost Communication with CB  

U1308 – Infotainment Bus Lost Communication with Future (reserved)  

U1312 – Infotainment Bus Lost Communication with Future (reserved)  

U1313 – Infotainment Bus Lost Communication with Satellite Radio  

U1314 – Infotainment Bus Lost Communication with Navigation  

U1317 – Infotainment Bus Lost Communication with High-Out Amplifier 

Harley-Davidson Radio Diagnostic Fault Codes

B2006 – Radio Switch Stuck or Open  

B2007 – Handlebar Switch Shorted High  

B2008 – Handlebar Switch Shorted Low  

B2009 – Handlebar Switch Stuck or Open  

B2010 – Passenger Switch Shorted High  

B2011 – Passenger Switch Shorted Low  

B2012 – Passenger Switch Stuck or Open  

B2013 – Sidecar Switch Shorted High  

B2014 – Sidecar Switch Shorted Low  

B2015 – Sidecar Switch Stuck or Open  

B2016 – Front Speaker Shorted (R ≤ 1.0 Ohm at setup)  

B2017 – Front Speaker Open (R > 100 Ohms, tested once per ignition cycle)  

B2018 – Front Speaker Shorted to Ground (Ignition ON after 10 sec OFF)  

B2019 – Front Speaker Shorted to Battery (Ignition ON after 10 sec OFF)  

B2020 – Rear Speaker Shorted (R ≤ 1.0 Ohm at setup)  

B2021 – Rear Speaker Open (R > 100 Ohms, tested once per ignition cycle)  

B2022 – Rear Speaker Shorted to Ground (Ignition ON after 10 sec OFF)  

B2023 – Rear Speaker Shorted to Battery (Ignition ON after 10 sec OFF)  

B2024 – Sidecar Speaker Shorted (R ≤ 1.0 Ohm at setup)  

B2025 – Sidecar Speaker Open (R > 100 Ohms, tested once per ignition cycle)  

B2026 – Sidecar Speaker Shorted to Ground (Ignition ON after 10 sec OFF)  

B2027 – Sidecar Speaker Shorted to Battery (Ignition ON after 10 sec OFF)  

Harley-Davidson Sensor & Motor Abbreviations

ABS  – Anti-Lock Braking System  

ACR  – Automatic Compression Release  

AFR  – Air Fuel Ratio  

AIS  – Active Intake Solenoid  

ATS  – Air Temperature Sensor  

BAS  – Bank Angle Sensor  

BCM  – Body Control Module  

CAN  – Controller Area Network  

CCM  – Cruise Control Module  

CKP  – Crankshaft Position Sensor  

DLC  – Data Link Connector  

DTC  – Diagnostic Trouble Codes  

ECM  – Electronic Control Module  

ECT  – Engine Coolant Temperature  

ECU  – Electronic Control Unit  

EFI  – Electronic Fuel Injection  

EFP  – Electronic Fuel Pump  

ET   – Engine Temperature Sensor  

FI   – Fuel Injectors  

FPR  – Fuel Pressure Regulator  

H-DSSS – Harley-Davidson Smart Security System  

HCU  – Hydraulic Control Unit (ABS)  

HFSM – Hands-Free Security Module  

HO2S – Heated Oxygen Sensor  

IAC  – Idle Air Control Actuator  

IAT  – Intake Air Temperature Sensor  

ICM  – Ignition Control Module  

IMAP – MAP + IAT Combined Sensor Unit  

ISS  – Ion Sensing System  

JSS  – Jiffy Stand Sensor  

LHCM – Left Hand Control Module  

MAP  – Manifold Absolute Pressure Sensor  

MHR  – Right Hand Control Module  

RCM  – Reverse Control Module  

TCA  – Throttle Control Actuator  

TGS  – Twist Grip Sensor  

TMAP – Combined Intake Air Temp & MAP Sensor  

TPS  – Throttle Position Sensor  

TSM / TSSM – Turn Signal Module / Turn Signal Security Module  

VE   – Volumetric Efficiency  

VIN  – Vehicle Identification Number  

VSS  – Vehicle Speed Sensor  

WSS  – Wheel Speed Sensor  

What Should You Do With a Code?

Not every code means something is broken — sometimes it’s just a low battery, temporary sensor glitch, or a byproduct of recent service work. But if your check engine light stays on, or your Harley is running rough, it’s a good idea to get it checked out.

At Motorcycle Tire Center in Orange, CA, we offer fast and accurate diagnostics. We'll read your stored codes, identify the issue, clear any false alarms, and get your bike back in top shape — no appointment needed.

Need Help With Your Harley?

Whether you're dealing with a fault code, need a quick tire change, or want help planning your next upgrade — we've got you covered.

Our experienced techs have worked on hundreds of Harleys and can get you back on the road quickly and affordably.