P0121 is the TPS - more than likely a bad one at that. It can cause the
injector circuit issues as well. Check the sensor with an analog meter (or
just replace it) and also check the injector harness connectors at the
injectors for dirt/grunge (clean them with some contact cleaner while you
have them off).
- Bernd
-----Original Message-----
From: Ed McCarrick [mailto:edmccarrick@yahoo.com]
Sent: Wednesday, December 26, 2007 6:33 PM
To: dakota-truck@dakota-truck.net
Subject: DML: MIL codes
Hi All,
I was driving down the road this evening and the check engine light popped
on. When I stopped and checked I had 4 codes. P0121 (accelerator position
sensor signal voltage too low) P0203 (Injector #3 control circuit)
P0206 (injector #6 control circuit) and P0207 (injector #7 control circuit).
Any idea of what might be the cause these in a '00 QC
4x4 with a 4.7 and a 5 speed with 113K on the clock?
TIA
Ed
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