OBD tech help needed!
Thread Starter
Teching In
Joined: Sep 2022
Posts: 9
Likes: 1
OBD tech help needed! m not sure how many pro tech people are here, but I have some codes I need to address, but I don’t know how.
OBD code 32
-EGR valve diagnostic switch, closed during engine start up or open when EGR flow requested by ECM
-Sensor signal voltage is low
-Electronic vacuum regulator valve (EVRV) error (EVRV controls EGR vacuum)
OBD code 42
-Electronic spark timing circuit open or shorted
OBD code 43
-electronic spark timing (EST) circuit low voltage detected
-Electronic spark control (ESC) circuit problems
OBD code 44
-lean exhaust indicated (left side on dual oxygen models)
OBD code 45
- Rich exhaust indicated (left side on dual oxygen models)
OBD code 46
- vehicle any death system (VATS) failure
- Power steering pressure switch failure
OBD code 51
- Computer problem, faulty, wrong or incorrectly installed PROM circuit; or ECM/PCM failure
OBD code 53
- System voltage too high (over 17.7 V to ECM) or EGR system fault or alternator voltage not normal or vehicle any theft system fault.
OBD code 54
- Fuel pump circuit fault or mixture control (M/C) solenoid fault or electronic control module (ECM) fault/EGR solenoid number to failure (3.8 L VIN1) —- I have an lT1…
- fuel pump relay
OBD code 55
- Electronic control module (ECM) fault or oxygen sensor circuit fault or EGR solenoid number three failure (3.8L VIN1)
In addition, my cooling fans won’t come on. I’ve checked the relay, relay box, but Estes the fans with direct power (works), unplugged the coolant temperature sensor and fans come on (as they should). Jumped the connector for the temperature sensor, doesn’t work…. Is my PCM bad? I’ve checked all
the grounds… The car runs reasonably well, but coolant fans won’t come on. What the hell could cause all of these? I’m baffled
Thanks in advance
OBD code 32
-EGR valve diagnostic switch, closed during engine start up or open when EGR flow requested by ECM
-Sensor signal voltage is low
-Electronic vacuum regulator valve (EVRV) error (EVRV controls EGR vacuum)
OBD code 42
-Electronic spark timing circuit open or shorted
OBD code 43
-electronic spark timing (EST) circuit low voltage detected
-Electronic spark control (ESC) circuit problems
OBD code 44
-lean exhaust indicated (left side on dual oxygen models)
OBD code 45
- Rich exhaust indicated (left side on dual oxygen models)
OBD code 46
- vehicle any death system (VATS) failure
- Power steering pressure switch failure
OBD code 51
- Computer problem, faulty, wrong or incorrectly installed PROM circuit; or ECM/PCM failure
OBD code 53
- System voltage too high (over 17.7 V to ECM) or EGR system fault or alternator voltage not normal or vehicle any theft system fault.
OBD code 54
- Fuel pump circuit fault or mixture control (M/C) solenoid fault or electronic control module (ECM) fault/EGR solenoid number to failure (3.8 L VIN1) —- I have an lT1…
- fuel pump relay
OBD code 55
- Electronic control module (ECM) fault or oxygen sensor circuit fault or EGR solenoid number three failure (3.8L VIN1)
In addition, my cooling fans won’t come on. I’ve checked the relay, relay box, but Estes the fans with direct power (works), unplugged the coolant temperature sensor and fans come on (as they should). Jumped the connector for the temperature sensor, doesn’t work…. Is my PCM bad? I’ve checked all
the grounds… The car runs reasonably well, but coolant fans won’t come on. What the hell could cause all of these? I’m baffled
Thanks in advance
