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Discussion Starter · #1 ·
could the code 1151 be caused by having too much oil in the motor? I know it is for the B2S1 HO2 points toward lean.
 

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Yes, oil overfill is listed as one of the possible causes for an 1151 code
 

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Before servicing DTCs P0171, P0172, P0174 and P0175, verify with the customer that before the "Check Engine Light" came on, the vehicle did not run out of fuel.

Diagnostic Trouble Codes (DTCs) P1131 and P1151 indicate the system is correcting rich for an overly lean condition. The HO2S voltage is less than 0.45 volt.

DTCs P1132 and P1152 indicate the system is correcting lean for an overly rich condition. The HO2S voltage is greater than 0.45 volt.

DTCs P1130 and P1150 indicate the fuel control system has reached its maximum compensation for a lean or rich condition and HO2S is not switching.

DTC P0171, left bank, and DTC P0174, right bank, indicate the fuel/air ratio is too lean. The system is at the rich limit.

DTC P0172, left bank, and DTC P0175, right bank, indicate the fuel/air ratio is too rich. The system is at the lean limit.

DTC/HO2S Reference List

-- HO2S-11 = DTCs P1130, P1131, P1132, P0171 and P0172

-- HO2S-21 = DTCs P1150, P1151, P1152, P0174 and P0175

Possible causes:

Fuel System

-- Excessive fuel pressure.

-- Leaking fuel injector(s).

-- Leaking fuel pressure regulator.

-- Low fuel pressure.

-- Plugged injector(s).

-- Damaged/disconnected HO2S circuit.

Induction System

-- Air leaks after MAF.

-- Vacuum leaks.

-- Restricted air inlet.

-- PCV system.

Base Engine

-- Oil overfill.

-- Cam timing.

-- Compression.

Ignition

-- Coil and secondary side of ignition system.

l Check air intake for leaks, obstructions, and damage.

l Check air filter, air filter housing for blockage.

l Check positive crankcase ventilation system integrity.

l Check engine vacuum integrity.

l Are there any obvious concerns?

Yes
REPAIR any of the problems found in the visual inspection. RERUN «Quick Test».

No
GO to «H41».
 

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Well, it does mention cam timimg as one of the possible causes.

Guess your best bet is to check the connector for the cam sensor too.

If any of them look corroded, just spray them with some electronic contact cleaner, and after they dry, put a little dielectric grease on them.
 

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Discussion Starter · #7 ·
Rolling-Thunder said:
Well, it does mention cam timimg as one of the possible causes.

Guess your best bet is to check the connector for the cam sensor too.

If any of them look corroded, just spray them with some electronic contact cleaner, and after they dry, put a little dielectric grease on them.

That's why I was asking. My code information says that the possible causes for this specific code were engine oil overfill or compression. But I am also getting the code for the cam position sensor circuit.
 

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If you look thru what I posted above for code 1151, it mentions cam timing.

What other code are you refering to ?



.
 

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Diagnostic Trouble Code (DTC) P0340 indicates that Self-Test has detected a Camshaft Position (CMP) Sensor circuit failure.

NOTE:
Refer to the Pinpoint Test «Schematic» at the beginning of the pinpoint test to determine the type of CMP sensor.

Possible causes:

-- CID circuit open.

-- CID circuit shorted to GND.

-- CID circuit shorted to PWR.

-- SIG RTN open (VR type).

-- PWR GND open (HALL type).

-- VPWR open (HALL type).

-- Damaged CMP Sensor.

-- Damaged PCM.

l Start engine.

l Will the engine start?

Yes
GO to «DR2».

No
DTC P0340 is not the cause of the No Start. GO to «Section 4» to diagnose the No Start symptom.




DR2:


Complete PCM Reset to clear DTCs (refer to Section 2, «Powertrain Control Module (PCM) Reset»).

l Start engine.

l Increase rpm to greater than 1500 rpm for 10 seconds. Repeat two times.

l Key off.

l Retrieve all Continuous Memory DTCs.

l Is DTC P0340 present?

Yes
For VR type CMP:
GO to «DR5».
For Hall Device type CMP:
GO to «DR3».

No
The fault that produced DTC P0340 is intermittent. GO to Pinpoint Test Step «Z1» with the following data: CMP PID and list of Possible Causes.
 

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Did you put too much oil in the engine?

Try cleaning the connector for the cam sensor.

I believe it is mounted on the driver's side of the engine, close to the front.
 
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