P0688 Fault Code (Causes & Fixes) ECM/PCM Power Relay Sense Circuit/Open
A P0688 fault code means the engine control module (ECM) indicated an excessive amount of power to the power relay sensing circuit.
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Ricky Gelding
- Dec 7, 2022
- 3 min
P0121 Fault Code (Causes & Fixes) Throttle Position Sensor (TPS) “A” Circuit Range Performance
P0121 is a sign of a severe problem and may cause a breakdown, avoid driving the vehicle if this code appears and fix as soon as possible.
Ricky Gelding
- Dec 7, 2022
- 3 min
P0052 Fault Code (Causes & Fixes) HO2S Heater Control Circuit Low (Bank 1, Sensor 2)
An OBD fault code P0052 is produced when the ECM detects too high a voltage.
Ricky Gelding
- Dec 7, 2022
- 3 min
P0037 Fault Code (Causes & Fixes) HO2S Heater Control Circuit Low (Bank 1, Sensor 2)
A P0037 code is generated when the ECM detects a signal voltage from oxygen sensor 2 that is not within the specified range.
Ricky Gelding
- Dec 7, 2022
- 3 min
P0031 Fault Code (Causes & Fixes) HO2S Heater Control Circuit Low
The P0031 code is caused by a low voltage in the bank 1 HO2S1 (pre catalytic converter heated oxygen sensor) heating element.
Ricky Gelding
- Dec 6, 2022
- 3 min
P0036 Fault Code (Causes & Fixes) Heated Oxygen Sensor (HO2s) Control Circuit
A P0036 error code indicates that the heated oxygen sensor (HO2S) control circuit bank 1, sensor 2 is not sending the right data to the PCM.
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