DTC P0116:00 [MZI-3.7]

id0102d2146800

DTC P0116:00 | CHT sensor circuit range/performance
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DETECTION CONDITION | • P0116:00 indicates the engine coolant temperature logic test has failed. This DTC indicates that the CHT value is higher than the calibrated value and could prevent 1 or more OBD monitors from completing. The PCM runs this logic after an engine off and a calibrated soak period (typically 6 hours). This soak period allows the IAT and the CHT to stabilize and not differ by more than a calibrated value. DTC P0116:00 is set when all of the following conditions are met: ― The CHT at engine start exceeds the IAT at engine start by more than a calibrated value, typically 17 °C {31 °F}. ― The CHT exceeds a calibrated value, typically 107 °C {225 °F}. ― The fuel system, heated oxygen and misfire monitors have not completed. ― The calibrated time to set DTC P0116:00 has expired.
POSSIBLE CAUSE | • CHT sensor malfunction • Cooling system malfunction • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available? | Yes | Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | VERIFY RELATED PENDING CODE OR STORED DTC • Verify the related PENDING CODE or stored DTCs. • Are other DTCs present? | Yes | Go to appropriate DTC inspection. (See DTC TABLE [MZI-3.7].)
No | Go to the next step.
4 | INSPECT CHT SENSOR • Inspect the CHT sensor. (See CYLINDER HEAD TEMPERATURE (CHT) SENSOR INSPECTION [MZI-3.7].) • Are there any malfunction? | Yes | Replace the CHT sensor, then go to the next step.
No | Go to the next step.
5 | VERIFY TROUBLESHOOTING OF DTC P0116:00 HAS BEEN COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [MZI-3.7].) • Carry out the OBD Drive Mode or KOER self-test. (See OBD DRIVE MODE [MZI-3.7].) (See KOEO/KOER SELF TEST [MZI-3.7].) • Is the PENDING CODE for this DTC present? | Yes | Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZI-3.7].) Go to the next step.
No | Go to the next step.
6 | VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZI-3.7].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZI-3.7].)
No | Troubleshooting completed.