Honda Check Engine Light Codes

Welcome to the Honda Check Engine Light codes page. Below you will find the most complete list of Honda trouble codes available. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there? We have a large number of resources to help you repair the problem. Here is how we suggest you proceed. Look up your code definition. This tells you where to start testing. If you are unsure of any abbreviations, check out the acronym list by clicking on the link at the left.

Next, read our article Automotive Circuit Testing 101, and if there is an article related to the system you are testing, such as Oxygen Sensors or EGR concerns, read these as well. They will provide valuable info! If there is a link to a specific diagnosis strategy for the code then follow that and start testing. If there is no procedure for your manufacturer specific code, then I suggest referring to a similar generic OBD II code (these are listed numerically by system type) to get a good idea of what to look for. If at this point you still need assistance use the "Get Help" link and let us know how we can help. We can provide information on component location, specifications, circuit color/location and more. We do ask that you please read the info available on the site first so that we can help reduce repeat questions. So please read our Disclaimer and when you're ready jump in!

Also we value your feedback and like to hear stories of unusual fixes or concerns you may have run into with your Check Engine Light, so feel free to share your experiences by using the "Contact Us" link. Let's go!

We do our best to update these Honda check engine light codes as frequently as possible. If you find one missing let us know and we we'll add it immediately! Please use the form on our Contact Page to get in touch with us. We certainly understand how frustrating it can be to look for a code definition and have it not online when you need it. And lets face it, if the service engine light is on then you need it now! It's easiest to use the "Find On This Page" feature of your browser's "Edit" menu to find codes on this page as the list is quite long. These are listed in numerical order for easy searching.

When retrieving Honda check engine light codes with an OBD II scan tool, proceed as follows:
1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the glove compartment. The connector has a removable cover.
2. Turn the ignition on.
3. Follow scan tool manufacturer's operating instructions to access the Diagnostic Trouble Codes (DTC's).

You may also retrieve Honda check engine light codes using the Malfunction Indicator Lamp (MIL), by counting the flashes as follows:
1. Connect SCS service connector special tool No. 07PAZ-0010100, or equivalent, to service check connector located under the passenger's side of dash.
2. Turn the ignition on.
3. MIL will indicate DTC's by outputting a number of flashes.

Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other Honda diagnostic trouble codes.

Manufacturer Specific Codes

P1106 BARO Circuit Range/Performance Malfunction

P1107 BARO Circuit Low Input

P1108 BARO Circuit High Input

P1121 Throttle Position Lower Than Expected

P1122 Throttle Position Higher Than Expected

P1128 MAP Lower Than Expected

P1129 MAP Higher Than Expected

P1162 HO2S11 Circuit Fault (Bank 1 Sensor 1)

P1163 HO2S11 Slow Response (Bank 1 Sensor 1)

P1164 HO2S11 Circuit Fault (Bank 1 Sensor 1)

P1165 HO2S11 Slow Response(Bank 1 Sensor 1)

P1166 HO2S11 Heater Circuit Fault (Bank 1 Sensor 1)

P1167 HO2S11 Heater Circuit (VS+) Fault (Bank 1 Sensor 1)

P1168 HO2S11 Label Circuit Low Voltage Fault (Bank 1 Sensor 1)

P1169 HO2S11 Label Circuit High Voltage Fault (Bank 1 Sensor 1)

P1201 Cylinder 1 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0301

P1202 Cylinder 2 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0302

P1203 Cylinder 3 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0303

P1204 Cylinder 4 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0304

P1205 Cylinder 5 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0305

P1206 Cylinder 6 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0306

P1241 Throttle Vent Control Motor Circuit 1 Malfunction

P1242 Throttle Vent Control Motor Circuit 2 Malfunction

P1243 Throttle Position Insufficient

P1244 Closed Throttle Position Insufficient

P1246 Accelerator Position Sensor 1 Circuit Malfunction

P1247 Accelerator Position Sensor 2 Circuit Malfunction

P1248 Accelerator Position Sensors 1 & 2 Improper Correlation

P1253 VTEC System Circuit Fault

P1259 VTEC System Malfunction, Rear Bank (Bank 1)

P1279 VTEC System Malfunction, Front Bank (Bank 2)

P1297 ELD Circuit Low Input

P1298 Electrical Load Detector Circuit High Voltage

P1300 Random Misfire

P1301 Cylinder 1 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0301

P1302 Cylinder 2 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0302

P1303 Cylinder 3 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0303

P1304 Cylinder 4 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0304

P1305 Cylinder 5 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0305

P1306 Cylinder 6 Misfire - Compare possible causes/symptoms for this Honda check engine light code to the Generic OBD II code P0306

P1316 Spark Plug Voltage Detection Circuit Malfunction, Front Bank

P1317 Spark Plug Voltage Detection Circuit Malfunction, Rear Bank

P1318 Spark Plug Voltage Detection Module Reset Circuit Malfunction, Front Bank

P1319 Spark Plug Voltage Detection Module Reset Circuit Malfunction, Rear Bank

P1324 Knock Sensor Power Source Circuit Low Voltage

P1336 CKP Sensor B Range/Performance

P1337 CKP Sensor B Low Input

P1359 CKP/TDC Sensor Circuit Connector Disconnection

P1361 TDC Sensor Intermittent Interruption

P1362 TDC 1 Sensor No Signal

P1366 TDC 2 Sensor Intermittent

P1367 TDC 2 Sensor No Signal

P1381 CYP Sensor A Intermittent Interruption

P1382 CYP Sensor A No Signal

P1386 CYP Sensor B Intermittent Interruption

P1387 CYP Sensor B No Signal

P1456 Evaporative Emission Control System Leak Detected (Fuel Tank System)

P1457 Evaporative Emission Control System Leak Detected (Control Canister System)

P1459 EVAP Purge Flow Switch Malfunction

P1491 EGR Valve Lift Insufficient Detected

P1498 EGR Valve Lift Sensor High Voltage

P1508 IAC Valve Circuit Failure

P1519 IAC Valve Circuit Failure

P1607 ECM Internal Circuit Failure A

P1608 ECM Internal Circuit Failure B

P1655 TMA or TMB Signal Line Fault

P1656 Automatic Transmission System Malfunction

P1660 A/T FI Data Line Failure

P1671 A/T FI Data Line No Signal

P1672 A/T FI Data Line Failure

P1676 Traction Control System FI Data Line No Signal

P1677 Traction Control System FI Data Line Failure

P1678 FPTDR Signal Line Failure

P1681 A/T FI Signal A Low Input

P1682 A/T FI Signal A High Input

P1686 A/T FI Signal B Low Input

P1687 A/T FI Signal B High Input

P1690 Traction Control System STB Line Failure

P1696 Traction Control Fuel Cut Signal Low Input

P1697 Traction Control Fuel Cut Signal High Input

P1705 TCM A/T Gear Position Switch Circuit Shorted

P1706 TCM A/T Gear Position Switch Circuit Open

P1753 TCM A/T Lockup Solenoid Valve "A" Fault

P1758 TCM A/T Lockup Solenoid Valve "B" Fault

P1790 TCM A/T TP Sensor Circuit Fault

P1791 TCM A/T Vehicle Speed Sensor Circuit Fault

P1753 TCM A/T ECT Sensor Circuit Fault

P1709, P1738, P1739, P1768, P1773, P1788, P1793 & P1795 Automatic Transmission System Malfunction

Please verify the Honda check engine light code descriptions and testing procedures from our site, with an appropriate manual. Due to the amount of free content we provide, we cannot guarantee the accuracy of all information. We bend over backwards to make this information as accurate as possible, but sometimes we can make mistakes. Don't tell anyone though!

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