Jeepers. Tech Help please

DesertDawg · Post by **DesertDawg** » Sun Feb 08, 2015 8:53 pm

Sorry, wrote that in a rush. This may need further diagnosis before buying a new EGR.

Was P0403 there all the time? What did you do to get this? Did you unplug EGR solenoid?

P0403:

- Bad EGR solenoid
- Excessive resistance in control circuit (PCM controlled ground) due to an open, chafing or damage to the harness
- Poor connection at the EGR solenoid harness (worn or loose pins)
- Water intrusion at the EGR solenoid harness
- Blockage in EGR control solenoid holding solenoid open or closed causing excessive resistance Loss of supply voltage to EGR solenoid
- Bad PCM

BAHA · Post by **BAHA** » Sun Feb 08, 2015 9:15 pm

DesertDawg wrote:Sorry, wrote that in a rush. This may need further diagnosis before buying a new EGR.

Was P0403 there all the time? What did you do to get this? Did you unplug EGR solenoid?

P0403:

- Bad EGR solenoid
- Excessive resistance in control circuit (PCM controlled ground) due to an open, chafing or damage to the harness
- Poor connection at the EGR solenoid harness (worn or loose pins)
- Water intrusion at the EGR solenoid harness
- Blockage in EGR control solenoid holding solenoid open or closed causing excessive resistance Loss of supply voltage to EGR solenoid
- Bad PCM

Code was not there,
I've replaced the egr and spark plugs after driving home got the code

Sent from my iPhone using Tapatalk

DesertDawg · Post by **DesertDawg** » Sun Feb 08, 2015 9:38 pm

Was it a new EGR?

BAHA · Post by **BAHA** » Sun Feb 08, 2015 9:51 pm

DesertDawg wrote:Was it a new EGR?

Yes. New original

Sent from my iPhone using Tapatalk

DesertDawg · Post by **DesertDawg** » Sun Feb 08, 2015 11:30 pm

OK, then you need to check the wiring to it. Make sure the plug is on properly. P0403 is the ECM saying there is something wrong in the EGR solenoid circuit.