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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 184 (MULTIPLEX INTEGRATED CONTROL SYSTEM)DTC TROUBLESHOOTING INDEX
2008 Chevrolet HHR LT, 2.4 P, Automatic
DTC Troubleshooting Index
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION DTC Troubleshooting Index
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Record all DTCs, and sort them by DTC type using the following DTC troubleshooting indexes, then troubleshoot the DTC(s) in this order:
- Battery voltage DTCs
- Internal error DTCs
- Loss of communication DTCs (beginning with the lowest number first; for example, if B1011 and B1155 are retrieved, troubleshoot B1011 first).
- Signal error DTCs
MICU
DTC DESCRIPTION
| DTC | Description | DTC type | Notes |
|---|---|---|---|
| B1000 | Communication circuit error (BUS Off) | Loss of communication | - |
| B1002 | MICU internal error (EEPROM error) | Internal error | |
| B1011 | MICU lost communication with gauge control module (VSP/NE message) | Loss of communication | |
| B1028 | Rear wiper auto stop switch malfunction | Signal error | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1036 | IG1 power supply circuit malfunction | Signal error | |
| B1077 | Front wiper auto stop input circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1077: WINDSHIELD WIPER (AS) SIGNAL ERROR ) |
| B1078 | Daytime running light for Canada circuit malfunction | Bulb failure | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1079 | Daytime running light for USA circuit malfunction | Bulb failure | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1127 | Driver's door key cylinder switch input circuit malfunction (Simultaneous input of lock and unlock signal) | Signal error | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1128 | Driver's door remote switch input circuit malfunction (Simultaneous input of lock and unlock signal) | Signal error | DTC Troubleshooting (see DTC B1128: DRIVER'S DOOR REMOTE SWITCH INPUT CIRCUIT MALFUNCTION (SIMULTANEOUS INPUT OF LOCK AND UNLOCK SIGNAL) ) |
| B1129 | Driver's door lock knob switch input circuit malfunction (Simultaneous input of lock and unlock signal) | Signal error | DTC Troubleshooting (see DTC B1129: DRIVER'S DOOR LOCK KNOB SWITCH INPUT CIRCUIT MALFUNCTION (SIMULTANEOUS INPUT OF LOCK AND UNLOCK SIGNAL) ) |
| B1275 | Headlight OFF position circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1275: HEADLIGHT OFF POSITION CIRCUIT MALFUNCTION; DTC B1276: HEADLIGHT SMALL POSITION CIRCUIT MALFUNCTION; DTC B1278: HEADLIGHT ON POSITION CIRCUIT MALFUNCTION ) |
| B1276 | Headlight SMALL position circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1275: HEADLIGHT OFF POSITION CIRCUIT MALFUNCTION; DTC B1276: HEADLIGHT SMALL POSITION CIRCUIT MALFUNCTION; DTC B1278: HEADLIGHT ON POSITION CIRCUIT MALFUNCTION ) |
| B1278 | Headlight ON position circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1275: HEADLIGHT OFF POSITION CIRCUIT MALFUNCTION; DTC B1276: HEADLIGHT SMALL POSITION CIRCUIT MALFUNCTION; DTC B1278: HEADLIGHT ON POSITION CIRCUIT MALFUNCTION ) |
| B1279 | Dimmer switch circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1279: DIMMER SWITCH CIRCUIT MALFUNCTION ) |
| B1280 | Turn switch circuit malfunction | Signal error | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1281 | Front wiper MIST position circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION ) |
| B1282 | Front wiper INT position circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION ) |
| B1283 | Front wiper LOW position circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION ) |
| B1284 | Front wiper HIGH position circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION ) |
Gauge Control Module
DTC DESCRIPTION
| DTC | Description | DTC type | Notes |
|---|---|---|---|
| B1150 | Communication circuit error (BUS-Off) | Loss of communication | - |
| B1152 | Gauge control module internal error (EEPROM error) | Internal error | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1155 | Gauge control module lost communication with MICU (Headlight switch message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1156 | Gauge control module lost communication with MICU (Wiper switch message) | Loss of communication | DTC Troubleshooting (see DTC B1156: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE MICU (WIPER SWITCH MESSAGE) ) |
| B1157 | Gauge control module lost communication with MICU (MICU message) | Loss of communication | DTC Troubleshooting (see DTC B1156: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE MICU (WIPER SWITCH MESSAGE) ) |
| B1159 | Gauge control module lost communication with MICU (Door switch message) | Loss of communication | DTC Troubleshooting (see DTC B1159: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE MICU (DOOR SWITCH MESSAGE) ) |
| B1160 | Gauge control module lost communication with MICU (Door lock switch message) | Loss of communication | DTC Troubleshooting (see DTC B1159: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE MICU (DOOR SWITCH MESSAGE) ) |
| B1168 | Gauge control module lost communication with PCM (Engine messages) | Loss of communication | DTC Troubleshooting (see DTC B1168: GAUGE CONTROL MODULE LOST COMMUNICATION WITH PCM (ENGINE MESSAGES) ) |
| B1169 | Gauge control module lost communication with PCM (A/T messages) | Loss of communication | DTC Troubleshooting (see DTC B1169: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE PCM (A/T MESSAGE) ) |
| B1170 | Gauge control module lost communication with VSA/ABS control unit (VSA/ABS message) | Loss of communication | DTC Troubleshooting (see DTC B1170: GAUGE CONTROL MODULE LOST COMMUNICATION WITH VSA/ABS MODULATOR-CONTROL UNIT (VSA/ABS MESSAGE) ) |
| B1173 | Gauge control module lost communication with TPMS control unit | Loss of communication | DTC Troubleshooting (see DTC B1173: GAUGE CONTROL MODULE LOST COMMUNICATION WITH TPMS CONTROL UNIT (TPMS MESSAGE) ) |
| B1175 | Fuel level sensor (Fuel gauge sending unit) circuit malfunction | Signal error | DTC Troubleshooting (see DTC B1175: FUEL LEVEL SENSOR (FUEL GAUGE SENDING UNIT) CIRCUIT MALFUNCTION ) |
| B1176 | Fuel level sensor (Fuel gauge sending unit) circuit short | Signal error | DTC Troubleshooting (see DTC B1176: FUEL LEVEL SENSOR (FUEL GAUGE SENDING UNIT) CIRCUIT ) |
| B1178 | F-CAN communication circuit error | Loss of communication | DTC Troubleshooting (see DTC B1178: F-CAN COMMUNICATION CIRCUIT ERROR ) |
| B1183 | Gauge control module lost communication with EPS control unit (EPS message) | Loss of communication | DTC Troubleshooting (see DTC B1183: GAUGE CONTROL MODULE LOST COMMUNICATION WITH EPS CONTROL UNIT (EPS MESSAGE) ) |
| B1185 | Gauge control module lost communication with Motor Control Module (MCM) (Batt message) | Loss of communication | DTC Troubleshooting (see DTC B1185: GAUGE CONTROL MODULE LOST COMMUNICATION WITH MOTOR CONTROL MODULE (MCM) ) |
| B1187 | Gauge control module lost communication with SRS unit | Loss of communication | DTC Troubleshooting (see DTC B1187: GAUGE CONTROL MODULE LOST COMMUNICATION WITH SRS UNIT (SRS MESSAGE) ) |
Immobilizer-Keyless Control Unit
DTC DESCRIPTION
| DTC | Description | DTC type | Notes |
|---|---|---|---|
| B1900 | Communication bus line error (BUS-OFF) | Loss of communication | - |
| B1905 | Immobilizer-keyless control unit lost communication with MICU (DRLOCKSW message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1906 | Immobilizer-keyless control unit lost communication with gauge control module (A/T message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
HandsFreeLink Control Unit
DTC DESCRIPTION
| DTC | Description | DTC type | Page |
|---|---|---|---|
| B1750 (2010) | Communication circuit error (BUS-OFF) | Loss of Communication | - |
| B1775 | Microphone input short to power or open or microphone failure | Signal Error | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1776 | Microphone input short to ground or microphone failure | Signal Error | DTC Troubleshooting (see DTC B1776: MICROPHONE INPUT SHORT TO GROUND OR MICROPHONE FAILURE ) |
| B1779 | HandsFreeLink steering wheel switch open or short to battery or switch failure | Signal Error | DTC Troubleshooting (see DTC B1779: HANDSFREELINK STEERING WHEEL OPEN OR SHORT TO BATTERY OR SWITCH FAILURE ) |
| B1780 | HandsFreeLink steering wheel switch short to ground or switch failure | Signal Error | DTC Troubleshooting (see DTC B1780: HANDSFREELINK STEERING WHEEL SHORT TO GROUND OR SWITCH FAILURE ) |
| B1792 | HandsFreeLink control module error | Internal Error | DTC Troubleshooting (see DTC B1792: HANDSFREELINK CONTROL UNIT MODULE ERROR ) |
| U1280 (2011) | Communication circuit error (BUS-OFF) | Loss of Communication | DTC Troubleshooting (see ) |
Climate Control Unit
DTC DESCRIPTION
| DTC | Detection Item or Symptom | DTC type | Page |
|---|---|---|---|
| B1200 | Communication circuit error (BUS-OFF) | Loss of communication | - |
| B1205 | Climate control unit lost communication with gauge control module (VSP/NE message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1206 | Climate control unit lost communication with gauge control module (ECT message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1207 | Climate control unit lost communication with gauge control module (ILLUMI message) | Loss of communication | DTC Troubleshooting (see DTC TROUBLESHOOTING ) |
| B1225 | An open in the in-car temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1225 OR DTC INDICATOR A AND AUTO: AN OPEN IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT ) |
| B1226 | A short in the in-car temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1226 OR DTC INDICATOR B AND AUTO: A SHORT IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT ) |
| B1227 | An open in the outside air temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1227 OR DTC INDICATOR C AND AUTO: AN OPEN IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT ) |
| B1228 | A short in the outside air temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1228 OR DTC INDICATOR D AND AUTO: A SHORT IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT ) |
| B1229 | An open in the sunlight sensor circuit | Signal error | DTC Troubleshooting (see DTC B1229 OR DTC INDICATOR E AND AUTO: AN OPEN IN THE SUNLIGHT SENSOR CIRCUIT ) |
| B1230 | A short in the sunlight sensor circuit | Signal error | DTC Troubleshooting (see DTC B1230 OR DTC INDICATOR F AND AUTO: A SHORT IN THE SUNLIGHT SENSOR CIRCUIT ) |
| B1231 | An open in the evaporator temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1231 OR DTC INDICATOR G AND AUTO: AN OPEN IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT ) |
| B1232 | A short in the evaporator temperature sensor circuit | Signal error | DTC Troubleshooting (see DTC B1232 OR DTC INDICATOR H AND AUTO: A SHORT IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT ) |
| B1233 | An open in the air mix control motor circuit | Signal error | DTC Troubleshooting (see DTC B1233 OR DTC INDICATOR A AND A/C: AN OPEN IN THE AIR MIX CONTROL MOTOR CIRCUIT ) |
| B1234 | A short in the air mix control motor circuit | Signal error | DTC Troubleshooting (see DTC B1234 OR DTC INDICATOR B AND A/C: A SHORT IN THE AIR MIX CONTROL MOTOR CIRCUIT ) |
| B1235 | A problem in the air mix control motor circuit, linkage, door, or motor | Signal error | DTC Troubleshooting (see DTC B1235 OR DTC INDICATOR C AND A/C: A PROBLEM IN THE AIR MIX CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR ) |
| B1239 | An open or short in the mode control motor circuit | Signal error | DTC Troubleshooting (see DTC B1239 OR DTC INDICATOR D AND A/C: AN OPEN OR SHORT IN THE MODE CONTROL MOTOR CIRCUIT ) |
| B1240 | A problem in the mode control motor circuit, linkage, doors, or motor | Signal error | DTC Troubleshooting (see DTC B1240 OR DTC INDICATOR E AND A/C: A PROBLEM IN THE MODE CONTROL MOTOR CIRCUIT, LINKAGE, DOORS, OR MOTOR ) |
| B1241 | A problem in the blower motor circuit | Signal error | DTC Troubleshooting (see DTC B1241 OR DTC INDICATOR F AND A/C: A PROBLEM IN THE BLOWER MOTOR CIRCUIT ) |
| B2967 | An open in the humidity sensor circuit | Signal error | DTC Troubleshooting (see DTC B2967 OR DTC INDICATOR J AND AUTO: AN OPEN IN THE HUMIDITY SENSOR CIRCUIT ) |
| B2968 | A short in the humidity sensor circuit | Signal error | DTC Troubleshooting (see DTC B2968 OR DTC INDICATOR K AND AUTO: A SHORT IN THE HUMIDITY SENSOR CIRCUIT ) |
| B2969 | Climate control unit lost communication with MICU (WIPSW message) | Loss of communication | DTC Troubleshooting (see DTC B2969: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH MICU (WIPSW MESSAGE) ) |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.