Denso system fault code table

by MOU YONG HONG on December 01, 2021

With the increase in the popularity of cars, the denso system has also entered our lives. But many customers are unable to start because they don't understand simple fault codes. When the fault code is displayed on the dashboard, it is not known whether there is a problem with a certain component or the entire system. Finally, most people will choose to hire a professional maintenance master to handle all problems. Without professional tools, it will take a lot of time to troubleshoot problems. Sometimes, the maintenance master will not be able to find the problem without relevant experience. In this way, a lot of our time and financial resources are wasted. Therefore, it is very important for you to understand the meaning of these fault codes. Especially for some minor faults, you don’t need to go to the repair shop, and you can troubleshoot them according to the prompts.

Serial number	Fault Code	Description
1	P0016	The relative position of camshaft and crankshaft is not reasonable
2	P0030	The upstream oxygen sensor heating control circuit is open
3	P0031	The upstream oxygen sensor heating control circuit is shorted to ground
4	P0032	The upstream oxygen sensor heating control circuit is shorted to the power supply
5	P0036	The downstream oxygen sensor heating control circuit is open
6	P0037	The downstream oxygen sensor heating control circuit is shorted to ground
7	P0038	The downstream oxygen sensor heating control circuit is shorted to the power supply
8	P0053	The upstream oxygen sensor heating internal resistance is unreasonable
9	P0054	The downstream oxygen sensor heating internal resistance is unreasonable
10	P0105	No change in intake pressure sensor signal (icing)
11	P0106	The intake pressure sensor is unreasonable
12	P0107	Intake pressure sensor is shorted to ground
13	P0108	The intake air pressure sensor is shorted to the power supply
14	P0112	Intake air temperature sensor signal voltage is too low
15	P0113	Intake air temperature sensor signal voltage is too high
16	P0116	Engine coolant temperature sensor is unreasonable
17	P0117	Engine cooling night temperature sensor circuit voltage is too low
18	P0118	Engine coolant temperature sensor circuit voltage is too high
19	P0120	Throttle position sensor signal is unreasonable
20	P0122	Throttle position sensor circuit voltage ultra-low limit
21	P0123	Throttle position sensor circuit voltage limit
22	P0130	The upstream oxygen sensor signal is unreasonable
23	P0131	The signal voltage of the upstream oxygen sensor is too low
24	P0132	The upstream oxygen sensor signal circuit voltage is too high
25	P0133	Upstream oxygen sensor aging
26	P0134	Upstream oxygen sensor circuit signal failure
27	P0135	Upstream oxygen sensor heating circuit failure
28	P0136	The downstream oxygen sensor signal is unreasonable
29	P0137	Downstream oxygen sensor signal voltage is too low
30	P0138	Downstream oxygen sensor signal circuit voltage is too high
31	P0140	Downstream oxygen sensor circuit signal failure
32	P0170/	Offline detection of air-fuel ratio closed-loop control self-learning is unreasonable
33	P0171	Offline detection of air-fuel ratio closed-loop control self-learning is too lean
34	P0172	Offline detection air-fuel ratio closed-loop control self-learning is too rich
35	P0201	One-cylinder injector control circuit is open
36	P0202	Two-cylinder injector control circuit is open
37	\|P0203	Three-cylinder injector control circuit is open
38	P0204	Four-cylinder injector control circuit is open
39	P0230	Oil pump control circuit failure
40	P0261	One-cylinder injector control circuit is shorted to ground
41	P0262	A cylinder injector control circuit is shorted to the power supply
42	P0264	Two-cylinder injector control circuit is shorted to ground
43	P0265	Two-cylinder injector control circuit 7 short circuit
44	P0267	Three-cylinder injector control circuit is shorted to ground
45	P0268	The three-cylinder injector control circuit is shorted to the power supply
46	P0270	Four-cylinder injector control circuit is shorted to ground
47	P0271	The four-cylinder injector control circuit is shorted to the power supply
48	P0300	Multi-cylinder misfire occurs
49	P0301	A cylinder misfire occurred
50	P0302	The second cylinder misfire occurred
51	P0303	Three-cylinder misfire occurred
52	P0304	Four cylinder misfire occurred
53	P0317	Bad road detection ABS signal failure
54	P0318	Bad road detection acceleration sensor signal failure
55	P0321	Frequent loss of EM signal for DG to the speed signal
56	P0322	No speed sensor pulse signal (open circuit or short circuit)
57	P0324	Knock signal processing chip and its circuit failure
58	P0325	Knock sensor circuit failure
59	P0327	The voltage of the knock sensor signal circuit is too low
60	P0328	The voltage of the knock sensor signal circuit is too high
61	P0335	Crankshaft position sensor circuit voltage failure
62	P0336	Crankshaft position sensor signal is unreasonable
63	P0340	Improper installation position of phase sensor
64	P0341	Poor contact of phase sensor
65	P0342	Phase sensor is shorted to ground
66	P0343	The phase sensor is shorted to the power supply
67	P0420	The oxygen storage capacity of the three-way catalytic converter is aging (exceeding emission limit)
68	P0443	Canister control valve control circuit signal is unreasonable
69	P0444	Canister control valve control circuit is open
70	P0445	Canister control valve control circuit voltage limit
71	P0458	Canister control circuit voltage is too low
72	P0459	Canister control valve control circuit voltage is too high
73	P0480	Cooling fan relay control circuit is open (low speed)
74	P0481	Open circuit of cooling fan and electrical control circuit (high speed)
75	\|P0500	Vehicle speed sensor failure
76	P0501	Unreasonable signal of vehicle speed sensor
77	P0506	Idle speed control speed is lower than target idle speed
78	P0507	Idle speed control speed is higher than target idle speed
79	P0508	Stepper motor drive pin is shorted to ground
80	P0509	The stepper motor drive pin is shorted to the power supply
81	P0511	Stepper motor drive pin is open
82	P0532	Air conditioner evaporator pressure sensor voltage is too high
83	P0533	Air conditioner evaporator pressure sensor voltage is too low
84	P0537	Air conditioner evaporator temperature sensor short circuit to ground
85	P0538	The air conditioner evaporator temperature sensor is shorted to the power supply
86	P0560	The system battery voltage signal is unreasonable
87	P0562	System battery voltage is too low
88	P0563	System battery voltage is too high
89	P0602	Electronic control unit coding failure
90	P0627	Open circuit of oil pump and electrical control circuit
91	P0628	Oil pump relay control circuit is shorted to ground
92	P0629	The oil pump relay control circuit is shorted to the power supply
93	P0645	A/C compressor relay control circuit is open
94	P0646	A/C compressor wei electrical appliance control circuit is shorted to ground
95	P0647	A/C compressor dimensional electrical control circuit is shorted to the power supply
96	P0650	MIL lamp driver stage circuit is shorted to the source
97	P0691	The cooling fan relay control circuit is shorted to ground (low speed)
98	P0692	The cooling fan relay control circuit is shorted to the power supply (low speed)
99	P0693	The cooling fan's control circuit of the electrical appliance is short-circuited to ground (high speed)
100	P0694	The cooling fan's electrical control circuit is shorted to the power supply (high speed)
101	P0700	External request lighting failure
102	P1610	Anti-theft key has no code
103	P1611	The key's anti-theft code is wrong
104	P1612	The anti-theft device and ECU communication is broken
105	P1613	The anti-theft device and ECU communication is broken
106	P1614	Chip failure in anti-theft key
107	P1651	SVS lamp driver stage circuit failure
108	P2177	Air-fuel ratio closed-loop control self-learning value exceeds the upper limit (medium load zone)
109	P2178	Air-fuel ratio closed-loop control self-learning value exceeds the lower limit (medium load zone)
110	P2187	The air-fuel ratio closed-loop control self-learning value exceeds the upper limit (low load area)
111	P2188	Air-fuel ratio closed-loop control self-learning value exceeds the lower limit (low load area)
112	P2195	Upstream oxygen sensor aging
113	P2196	Upstream oxygen sensor aging
114	P2270	Downstream oxygen sensor aging
115	P2271	Downstream oxygen sensor aging
116	U0001	CAN communication related diagnosis
117	U0101	ECU and TCU control module communication
118	U0104	ECU communicates with cruise control module
119	U0155	ECU communicates with dashboard control module
120	U0415	ECU and ABS-ECU control module communication

No support response

The package was a little late arriving and I contacted Support twice, but nobody ever wrote me back. These ship direct from China.

Pump is fine

Company is based in China and shipping takes WAY longer than they advertise.

Don't pass the quality control

Some parameters out of range

Not wat was orderd

I orderd this gasket kit from VEP because the picture shows the right gaskets kit. with quality gaskets and a reinforced head gasket. the deliverd a gasket kit for a S4Q but low quality gaskets (1 was broken) and the head gasket was not reinforced. so i can not use that head gasket and have to oder a other one somewere else.

Vep sales very good part. Deliver on right time

Denso system fault code table

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Denso system fault code table

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