2003 ctdi goes into limp mode
I have a 2003 civic 1.7 ctdi with 78000 miles and going into limp mode and engine management light on constantly. Computer codes read po238 102 113 and p1236. I have tried cleaning the turbo pressure sensor and replaced the mass air flow sensor but no change. The car isn't smoky and according to the service book it had a new turbo fitted 6000 miles ago. It's been suggested I change the fuel filter and clean the egr valve. Can you help please
Cars & Trucks - Honda
Answers & Comments
Code p0238 refers to manifold absolute pressure (MAP) sensor A TC system --high input===causes --wiring short to positive --MAP sensor---ECM
Replace the sensor (internal fault)
code p0102 refers to mass air flow (MAF) sensor /volume air flow (MAV) sensor --low input ===causes wiring short to ground ---MAF/VAF sensor
again the MAF is implicated as faulty
code po113 refers to intake air temperature (IAT) sensor--circuit malfunction===causes --wiring open circuit/short to positive --wiring short to ground --ground wire defective---IAT sensor---ECM
Now looking at all the codes the most common fault is wiring damaged so pay particular to the condition of the wiring loom --the condition of the connections --clean pins - pins not bent --water in the connections . IT is common that when disconnecting the units that the connection is pulled apart by pulling on the wires .. This check is the cheapest before any money is spent on the rest . Do not clean but replace because if cleaning does not produce a result you still do not know if you cleaned it properly or if it is faulty
Fuel Filter Removal & Installation To Remove:
- Remove fuel tank unit beneath floor access panel.
- Remove fuel filter from fuel pump/fuel gauge sending unit.
To Install:- Install fuel filter to fuel pump/fuel gauge sending unit.
- Install fuel tank unit and floor access panel.
This may workI found it on fixya.